In a way the "global monopoly" vision does not seem very different from the Hunt Brothers trying to corner the market for silver in 1979/80. The plan is to buy up enough supply to create artificial scarcity. [1]

The problem with this approach is that there just aren't that many robust, natural monopolies. I think that's been a defect in VC investment strategies in Silicon Valley for at least a decade.

[1] https://en.wikipedia.org/wiki/Silver_Thursday